Piston-rod packing.



No. 856.303. PATENTLD JUNE 11, 1907 G. RGTHENBUGHER.

PISTON ROD PACKING. APPLIOATION FILED JAN. ze. 1907.

51 Fay; f8. Z7 /ll/ Fig. 5 f a,4 l0 7\// GEORGE ROTHENBUCIIER, OF NEWYORK, N. Y.

PlSTON-ROD PACKING.

Specification of Letters Patent.

Patented June 1 l, 1907.

Application filed January 26,1907. Serie-1 NO- 354.197.

To all whom, t may con/ecrit:

Be it known'that I, GEORGE ROTHEN- suenan, a citizen of the UnitedStates, residing at New York city, (Brooklyrn) county of Kings, State ofNew York, have invented new and useful Improvements in PistonltodPacking, Vof which the following is a speciiication.

This invention relates to a piston rod packing which provides means foreffectively lubricating the piston rod and permits a uniform'distribution of the lubricant along such rod and throughout the packing.

In the accompanying drawing: Figure 1 is a longitudinal central sectionof a stelling box provided with my improved packing,

l* 1g. 2 across sect1on on line 2--2, Fig. 1;

Fig. 3 a similar section on line 3-3, Fig. 1; Fig. 4 a perspectivevicwof one of the outer ring-sections, and Fig. 5 a similar view of oneof the inner ring-sections.

The packing comprises sets of overlapping outer and inner ringssubdivided radially into a suitable number of sections, each of whichhas the form of a right angle triangle in cross section. Each outerring-section has a deep groove 11 in its circumference 12, such grooveconstituting an oil well. It also has a shallow groove 13 in that side14 which joins circumference 12 at right angles. Lastly, it has ashallow groove 15 in its inclined side 16. liannel 11 comnnlnicates withgroove 15 by radial ducts 1'7, while groove 15, in turn, communicateswith groove 13 by ducts or other absorbent perforations 1S, so that allthree grooves communicate with each other.

Each inner ring-section 19 has a deep groove 2() in its inner face 21,such groove forlnin(r the seat for an asbestos ring or swab` 22. 'l eside 23 that adjoins side 21 at right angles, is provided with a shallowgroove 24, and a further shallow groove is formed in the inclined side26. Groove 25 communicates with groove 2() by ducts or perforations 27,and also with groove 24 by ducts 28.

In assembling the parts, the rings are so arranged that each inner ringis placed with its inclined faceagainst the corresponding face of thecomplementary outer ring. In this way the side 21 of the inner ring willface with' its swab 22, the piston rod 29, while the side 12 of theouter ring 4will face with its oil well 11, the stuiling box 30.Further, the grooves 15, 25 ofthe inclined sides 16, 26, willzbe broughtopposite one another to form, jointly, a circumferential channel betweeneach mated v pair of rings. As the rings are built up in sets, in themanner described, the straight side 14 of an outer ring will be made tofa'ce the straight side 23 of the 'inner ring of the adjoining set. Thusthe grooves 13, 24 will also be brought opposite one another to form,jointly, a circumferential oil channel between adjoining sets of rings.

The lubricant introduced into the stuffing box by pipe 31 will enter thevarious wells 11, whence it will flow by ducts 17 into the channelsformed by the grooves 15, 25 between the two rings of each set.Fromthese channels the lubricant will flow through ducts 27 into thegrooves 20, to saturate the swabs 22, and be transferred by the latterto the piston rod. The lubricant is also free to YHow from the channelsformed by the grooves 15, 25 of one ring-set, by ducts 18, 28 into thechannel formed by the grooves 13, 24 ofthe adjoining ring-set.

It will be seen that with my packin the oil is effectively carried tothe piston ro` and.

will also distribute itself evenly throughout the packing.' Thus, anyexcess of oil adhering to the rod will be returned or re-distributed. Soalso in upright stuffing boxes, any sediments will descend through theducts 18,

28, and accumulate at the bottom of the box, from wherev they may beremoved from time to time. Finally, the inner rings will have a tendencyto slide inward upon their inclined faces, as the packing wears, so thatthe swabs will always hug the rod tightly.

I claim:

1. A piston rod packing comprising a ring having a groove in its innerface, an oil duct communicating with said groove, and an absorbent swabseated within the groove, substantially'as specified. v

2. A piston rod packing comprlsing an outer ring having a perforation,an inner ring ..1

having a communicating perforation and a groove into which itsperforation opens, and

IOC

an absorbent swab seated within said groove, ,f

substantially as specified. Y ,Y

' 3. In a piston rod packing, an outer ringsection substantiallytriangular in cross section and having a groove in each of its threesides, and ducts for connecting said grooves with each other,substantially as specified.

4. In a piston rod packing, an inner ringsection substantiallytriangular in cross section and having a groove in each f its threesides, and duets for Connecting said grooves with each other,substantially as specified.

5. A piston rod peeking comprising an outer ring substantiallytriangular in 'cross Section vand having communicating grooves in eachof its sides, an inner ring substantinily triangular in cross sectionand having communicating grooves in each of its sides, which groovesalso communicate with the grooves of the outer ring, and a swab fittedinto one of the grooves of the inner ring, substantially as .speciedSigned by me at New York city, (Manhattan,) N. Y., this 25th day ofJanuary, 1907. 15

GEORGE ROTHENBUCHER.

Witnesses FRAM; v. BRIEsEN, ADoLPH MINER.

